<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style type="text/css">
			*{
				padding: 0;
				margin: 0;
			}
			img{
				width: 150px;
				height: 100px;
			}
			.box{
				height: 150px;
				/* 水平居中 */
				text-align: center;
				padding-top: 50px;
				background-color: rgba(255, 255, 255, 0.3);
			}
			body{
				background-image: url(../img/1.jpg);
			}
		</style>
	</head>
	<body style="">
		<div class="box">
			<img  src="../img/1.jpg"/>
			<img  src="../img/2.jpg"/>
			<img  src="../img/3.jpg"/>
			<img  src="../img/4.jpg"/>
			<img  src="../img/5.jpg"/>
		</div>
		
		<script type="text/javascript">
			window.onload = function() {
				var images = document.getElementsByTagName('img');
				for (var i = 0; i < images.length; i++) {
					images[i].onclick = function() {
						// this代表当前正在加点击事件的对象images[i]
						var image = this.src;
						console.log(image);
						// document.body.style.backgroundImage = 'url(../img/2.jpg)';
						// 豆豆加加
						document.body.style.backgroundImage = 'url(' + image + ')';
					}
				}
			}
		</script>
	</body>
</html>
